WheelColorPickerState class
A button which you can click to pop out an overlay containing a wheel of color pieces.
- Inheritance
-
- Object
- State<
WheelColorPicker> - WheelColorPickerState
- Mixed in types
Constructors
Properties
- color ↔ Color
-
current color of the button
getter/setter pair
- context → BuildContext
-
The location in the tree where this widget builds.
no setterinherited
-
fanSliceList
↔ List<
FanSlice> -
List of fan pieces generated on initialization with respect to colors
getter/setter pair
- hashCode → int
-
The hash code for this object.
no setterinherited
- isOpen ↔ bool
-
When the overlay is shown, isOpen is true
We can technically only rely on overlayEntry to determine if the
overlay is shown; however, we want to show the animation of fan slices
disappearing, thus the removal of overlayEntry is a future.
Thus to prevent user from double tapping another color before the
overlay disappears, we have to check isOpen.
getter/setter pair
- layerLink → LayerLink
-
final
- mounted → bool
-
Whether this State object is currently in a tree.
no setterinherited
- overlayContent ↔ Widget
-
Overlay content is generated post build
The reason for this is because we need the trigger button's location information
in-order to determine the center position for our wheel
Also this saves unnecessary computation
getter/setter pair
- overlayEntry ↔ OverlayEntry?
-
current overlayEntry
to remove the overlay, we can do overlayEntry.remove()
which will remove its self from OverlayState
The content of the overlayEntry is generated
getter/setter pair
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
- widget → WheelColorPicker
-
The current configuration.
no setterinherited
Methods
-
activate(
) → void -
Called when this object is reinserted into the tree after having been
removed via deactivate.
inherited
-
build(
BuildContext context) → Widget -
Describes the part of the user interface represented by this widget.
override
-
createTicker(
TickerCallback onTick) → Ticker -
Creates a ticker with the given callback.
inherited
-
deactivate(
) → void -
Called when this object is removed from the tree.
inherited
-
debugFillProperties(
DiagnosticPropertiesBuilder properties) → void -
Add additional properties associated with the node.
inherited
-
didChangeAccessibilityFeatures(
) → void -
Called when the system changes the set of currently active accessibility
features.
inherited
-
didChangeAppLifecycleState(
AppLifecycleState state) → void -
Called when the system puts the app in the background or returns
the app to the foreground.
inherited
-
didChangeDependencies(
) → void -
Called when a dependency of this State object changes.
inherited
-
didChangeLocales(
List< Locale> ? locales) → void -
Called when the system tells the app that the user's locale has
changed. For example, if the user changes the system language
settings.
inherited
-
didChangeMetrics(
) → void -
Called when the application's dimensions change. For example,
when a phone is rotated.
inherited
-
didChangePlatformBrightness(
) → void -
Called when the platform brightness changes.
inherited
-
didChangeTextScaleFactor(
) → void -
Called when the platform's text scale factor changes.
inherited
-
didHaveMemoryPressure(
) → void -
Called when the system is running low on memory.
inherited
-
didPopRoute(
) → Future< bool> -
Called when the system tells the app to pop the current route, such as
after a system back button press or back gesture.
inherited
-
didPushRoute(
String route) → Future< bool> -
Called when the host tells the application to push a new route onto the
navigator.
inherited
-
didPushRouteInformation(
RouteInformation routeInformation) → Future< bool> -
Called when the host tells the application to push a new
RouteInformation and a restoration state onto the router.
inherited
-
didRequestAppExit(
) → Future< AppExitResponse> -
Called when a request is received from the system to exit the application.
inherited
-
didUpdateWidget(
covariant WheelColorPicker oldWidget) → void -
Called whenever the widget configuration changes.
inherited
-
dispose(
) → void -
Called when this object is removed from the tree permanently.
override
-
initState(
) → void -
Called when this object is inserted into the tree.
override
-
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent method or property is accessed.
inherited
-
reassemble(
) → void -
Called whenever the application is reassembled during debugging, for
example during hot reload.
inherited
-
setState(
VoidCallback fn) → void -
Notify the framework that the internal state of this object has changed.
inherited
-
toDiagnosticsNode(
{String? name, DiagnosticsTreeStyle? style}) → DiagnosticsNode -
Returns a debug representation of the object that is used by debugging
tools and by DiagnosticsNode.toStringDeep.
inherited
-
toString(
{DiagnosticLevel minLevel = DiagnosticLevel.info}) → String -
A string representation of this object.
inherited
-
toStringShort(
) → String -
A brief description of this object, usually just the runtimeType and the
hashCode.
inherited
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited